Article View: comp.os.msdos.programmer
Article #4731Re: TSR's - Must they be converted to .COM?
From: david nugent
Date: Sun, 17 Feb 1991 05:09
Date: Sun, 17 Feb 1991 05:09
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1348 bytes
In <24314@netcom.COM> resnicks@netcom.COM (Steve Resnick) writes:
> Making an EXE TSR is a little more complicated, in that you need to know
> where the code segment is relative to the PSP, and how many paragraphs the
> TSR is going to take when you make the DOS call. I don't think the INT 27H
> TSR interrupt will work for this, but rather DOS function 31H will do the TSR
> in this "style'
INT 27H will still work alright, provided you have CS set to the program's
PSP. That's often a little hard to arrange in a .EXE format, but it's
nevertheless possible. With an easier alternative around, it's no wonder
that that sort of contortion is rarely, if ever, seen.
david
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!munnari.oz.au!csource!david From: david@csource.oz.au (david nugent) Newsgroups: comp.os.msdos.programmer Subject: Re: TSR's - Must they be converted to .COM? Keywords: TSR Message-ID: <1014@csource.oz.au> Date: 17 Feb 91 05:09:45 GMT References: <3188@unccvax.uncc.edu> <24314@netcom.COM> Organization: Unique Computing Pty Ltd, Melb, Aust. Lines: 21